Tuesday, September 26, 2017

[google-cloud-sql-discuss] Cloud SQL failovers and read replicas

I've been testing the failover replica and read replica functionality on GCP and so far it looks great, I can trigger a failover manually and almost instantly the failover replica starts the process to become the master. Now, I've also tested having the three together, that is a master, a failover replica and a read replica and from what I can see there is no interruption trying to connect to the read replica when/while the failover triggers. Does anybody have an idea if the read replica attaches to the "new" master automatically in case of a failover? I've read the docs but there is no explanation whatsoever about this specific scenario. All I could find was this: "Note: Read replicas do not provide failover capability. To provide failover capability for a Second Generation instance, see Configuring an Instance for High Availability." on the "Creating read replicas" documentation.

Thanks in advance for any help.

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